20313313656599 has 2 divisors, whose sum is σ = 20313313656600. Its totient is φ = 20313313656598.

The previous prime is 20313313656553. The next prime is 20313313656703. The reversal of 20313313656599 is 99565631331302.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20313313656599 - 2³⁶ = 20244594179863 is a prime.

It is a super-2 number, since 2×20313313656599² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20313313646599) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10156656828299 + 10156656828300.

It is an arithmetic number, because the mean of its divisors is an integer number (10156656828300).

Almost surely, 2^{20313313656599} is an apocalyptic number.

20313313656599 is a deficient number, since it is larger than the sum of its proper divisors (1).

20313313656599 is an equidigital number, since it uses as much as digits as its factorization.

20313313656599 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11809800, while the sum is 56.

The spelling of 20313313656599 in words is "twenty trillion, three hundred thirteen billion, three hundred thirteen million, six hundred fifty-six thousand, five hundred ninety-nine".